Manifolding device



Dec. 15, 193 1. 3. 0. DEGENER MANIFOLDING DEVICE Original Filed May 2,1929 (Ittornegs,

Patented Dec. 15, 1931 UNITED STATES PATENT OFFICE GUSTAVE DEGENER, OFSAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 ROYAL TYPE- WRI'IER COMPANY,INC., 015 NEW YORK, N. Y., A.CORPORATION OF NEW YORK MANIFOLDING DEVICEOriginal application filed May 2, 19%9, Serial No. 359,934. Divided andthis application filed May 15, 1930.

Serial No. 452,720.

This invention relates to new and useful improvements in typewritingmachines generally, although more specifically to the platen elementthereof.

This application forms a division of my copending application Serial No.359,934, filed May 2, 1929. I

Among the several objects of my invention are to provide a non-rotatableplaten adapted especially for use in connection with interfold be easilyreversed to present either surface to the work sheets, depending uponthe number of copies of work sheets desired to be printed; and toprovide the platen with convexed impact-receiving surfaces which correspond to the usual concaved printing surfaces of the type employed instandard typewriting machines.

In the drawings:

Figure 1 is a vertical sectional view through a type carriage showingthe application of my invention;

Figure 2 is a top plan view of the platen showlng its connection withthe supporting arms; I v

Figure 3 is a fragmentary front elevation of the platen Figure 4 is anend elevation thereof;

Figure 5 is a cross section taken on the line 5-5 of Figure 2; and

Figure 6 is a cross section taken on the line 66 of Figure 2.

Referring to the accompanying drawings, particularly to Figure 1thereof, I have illustrated my improved platen as being applied to atypewriter carriage A which includes end plates 5. Extending between theend plates and supported thereby is a lower guide roller 6, and alsosupported on the end plates 5 is a paper table B over which work sheetsare led to a point below thelower guide roller 6. The lead-in ends ofthe work sheets are then led upwardly in front of my improved platen C.and the free ends of the The typewriting machine includes the usual typebars D which are provided with the usual type 9 and- 10, the said typebeing provided with concaved printing faces. The platen C is detachablyconnected at its ends in a manner hereinafter described to supportingarms or links 1111 which are respectively disposed adjacent the endplates 5-5 of the carriage. Each support or link 11 is supported fromthe carriage by means of a front link 12 and a rear rock arm 13, thelatter being fixed to a transverse shaft 14 journalled in the end plates5 of the carriage.

Fixed to the rock shaft 14 is a cam 15 which The platen C consists of anelongated memher or casing c which is U-shaped in cross section and isformed of metal or other hard substance. This casing includes a'curvedconnecting portion 17 forming'a printing surface, and spaced top andbottom walls 18-18. The casing isfilled with an insert 19 of rubber orother relatively soft material, the face 20 thereof opposite theconnecting portion 17 being correspondingly curved to form a printingsurface.- The printing surfaces, that is, the type impact-receivingsurfaces, are convexed to fit the concaved printing surfaces of thetypes-9 and 10. Thus it will be seen that I have provided a platen withoppositely disposed and relatively hard and soft printing surfaces whichare curved to fit the curved printing surfaces of the type. The platen Cis connected to the supporting links 11 in a manner to permit the platento be reversed so as to present either the relatively hard face 17 orthe relatively soft face 20 to the type, depending upon the number ofcopies of work sheets desired to be printed. A spring-pressed fulcrumpin 21 extends from one end of the platen for engagement with theassociated link 11, and a fulcrum pin 22 which is fixed to the other endof the platen is engageable in an opening in the correspondingsupporting link 11. Platen locating lugs 23-23 are rigidly attached tothe last mentioned link and 00- the inner ear 24 by a coil spring 28which surrounds the inner end of the pin and bears at its ends againstsaid shoulder 27 and against the inner or end wall 29 of the recess.

The inner end of pin 21 is normally spaced from the inner end wall 29 ofthe recess. The pin 22 is fixed to the ears 25.

Thus the above construction permits the ready removal or reversal of theplaten by first moving the pin 21 against the tension of the spring28until said pin is freed from the link 11. After the platen has beenfreed from both links 11, the platen may be reversed and repositioned soas to present the other printing faces, either 17 or 20, as the case maybe, to the type, the lugs 23 serving to retain the platen againstrotation.

In view of the above it will be apparent that I have provided anon-rotatable platen for typewriting machines and have provided the samewith oppositely disposed relatively soft and hard impact-receivingsurfaces; that said impact-receiving surfaces are curved to fit theconcaved printing surfaces of the type; and that the platen is mountedon a support in a manner which will retain the platen against rotationbut which will permit the platen to be easily removed and reversed so asto present either of said impact-receiving surfaces to the type.

I claim:

1. A reversible platen including a metal casing open along one side andincluding a connecting portion opposite said open side to form a hardprinting surface, and a filler within said casing and forming a softprinting surface extending along the open side of the casing, saidprinting surfaces being oppositely convexed.

2. In a manifolding device, the combination with spaced supports, of areversible platen disposed therebetween and provided with hard and softprinting faces, means including a spring pressed pin for removablyconnecting the platen to said supports, and means cooperating with theplaten and with one of the supports for retaining the platen againstrotation.

3. In a manifolding device, the combination with spaced supports, of areversible platen disposed therebetween, said platen comprising a sheetmetal casing of U-shaped cross section forming topand bottom walls and aconnecting portion, the latter forming a hard printing face, a fillerdisposed within the casing and having a soft printing face opposite saidconnecting portion, means for removably connecting said platen to saidsupports, and means cooperating with the cross section forming top .andbottom walls and a connecting portion, the latter forming a hardprinting face, a filler disposed within the casing and having a softprinting face opposite said connecting portion, the top and bottom wallsat each end of the platen being provided with overlapping ears, a pinrigidly connected to the ears at one end of the platen for engaging oneof the supports, a spring pressed pin mounted on the platen andextending through the ears at the other end of the platen for removablyengaging the other support, and means cooperating with the platen andwith one of the supports for retaining the platen against rotation.

5. A reversible platen including a metal casing open along one side andincluding a connecting portion opposite said open side to form a hardprinting surface, and a filler within said casing and forming a softprinting surface extending along the open side of the casing.

In testimony whereof, I have hereunto sub scribed my name.

GUSTAVE O. DEGENER.

